On my SPID label I have the 7X6 code which is "SPOTLIGHT - LF HAND".
When I got the car the spotlight was gone and all the remains is a hole. Anybody know if a good source for these?
Are they made by Unity (see those all over Ebay)?

Yes it is a Unity spot. I have one on my car. Make sure you get it for the Caprice - brackets are different for different cars.

ebay.com galls.com or you can just simply do a search